<template>
  <form-item-wrapper :designer="designer" :field="field" :rules="rules" :design-state="designState"
                     :parent-widget="parentWidget" :parent-list="parentList" :index-of-parent-list="indexOfParentList"
                     :sub-form-row-index="subFormRowIndex" :sub-form-col-index="subFormColIndex"
                     :sub-form-row-id="subFormRowId"
                     :in-table-flag="inTableFlag"
                     :column-prop="columnProp"
  >
    <el-radio-group ref="fieldEditor" v-model="fieldModel" v-show="!isReadMode"
                    :disabled="field.options.disabled"
                    :style="{display: field.options.displayStyle + ' !important'}"
                    :class="{'design-style': designState}"
                    @change="handleChangeEvent">
      <template v-if="!!field.options.buttonStyle">
        <el-radio-button v-for="(item, index) in field.options.optionItems" :key="index"
                         :value="item.value"
                         :disabled="item.disabled" :border="field.options.border"
                         :style="{display: field.options.displayStyle}">{{ item.label }}
        </el-radio-button>
      </template>
      <template v-else>
        <el-radio v-for="(item, index) in field.options.optionItems" :key="index"
                  :value="item.value"
                  :disabled="item.disabled" :border="field.options.border"
                  :style="{display: field.options.displayStyle}">{{ item.label }}
        </el-radio>
      </template>
    </el-radio-group>
    <template v-if="isReadMode">
      <span class="readonly-mode-field">{{ optionLabel }}</span>
    </template>
  </form-item-wrapper>
</template>

<script>
import FormItemWrapper from './form-item-wrapper'
import emitter from '@/utils/emitter'
import i18n, {translate} from "@/utils/i18n";
import fieldMixin from "@/components/form-designer/form-widget/field-widget/fieldMixin";
import serviceMixin from "@/components/form-render/serviceMixin";

export default {
  name: "radio-widget",
  componentName: 'FieldWidget',  //必须固定为FieldWidget，用于接收父级组件的broadcast事件
  mixins: [emitter, fieldMixin, i18n, serviceMixin],
  props: {
    field: Object,
    parentWidget: Object,
    parentList: Array,
    indexOfParentList: Number,
    designer: Object,

    designState: {
      type: Boolean,
      default: false
    },

    subFormRowIndex: { /* 子表单组件行索引，从0开始计数 */
      type: Number,
      default: -1
    },
    subFormColIndex: { /* 子表单组件列索引，从0开始计数 */
      type: Number,
      default: -1
    },
    subFormRowId: { /* 子表单组件行Id，唯一id且不可变 */
      type: String,
      default: ''
    },

  },
  components: {
    FormItemWrapper,
  },
  data() {
    return {
      oldFieldValue: null, //field组件change之前的值
      fieldModel: null,
      rules: [],
    }
  },
  computed: {},
  beforeCreate() {
    /* 这里不能访问方法和属性！！ */
  },

  created() {
    /* 注意：子组件mounted在父组件created之后、父组件mounted之前触发，故子组件mounted需要用到的prop
       需要在父组件created中初始化！！ */
    this.registerToRefList()
    this.initOptionItems()
    this.initFieldModel()
    this.initEventHandler()
    this.buildFieldRules()

    this.handleOnCreated()
    this.field.options.autoLoad && this.loadData()
  },

  mounted() {
    this.handleOnMounted()
  },

  beforeUnmount() {
    this.unregisterFromRefList()
  },

  methods: {}
}
</script>

<style lang="scss" scoped>
 /* form-item-wrapper已引入，还需要重复引入吗？ */
 @import '@/styles/design-style.scss';

 .design-style {
   @include design-style('单选项');
 }
</style>
